shadowik/PIbd-21_Zaharchenko_M.I._DoubleDeckerBus._Base
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shadowik 2022-11-24 21:26:12 +04:00
parent 303d404cbf
commit 38e6f2c469
5 changed files with 245 additions and 92 deletions
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119
DoubleDeckerBus/DoubleDeckerBus/FormMapWithSetBuses.Designer.cs generated
View File

@ -29,6 +29,12 @@
private void InitializeComponent()
{
this.groupBoxSettings = new System.Windows.Forms.GroupBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.listBoxMaps = new System.Windows.Forms.ListBox();
this.ButtonDeleteMap = new System.Windows.Forms.Button();
this.ButtonAddMap = new System.Windows.Forms.Button();
this.textBoxNewMapName = new System.Windows.Forms.TextBox();
this.comboBoxSelectorMap = new System.Windows.Forms.ComboBox();
this.buttonRight = new System.Windows.Forms.Button();
this.buttonDown = new System.Windows.Forms.Button();
this.buttonLeft = new System.Windows.Forms.Button();
@ -38,14 +44,15 @@
this.buttonDeleteBus = new System.Windows.Forms.Button();
this.maskedTextBoxPosition = new System.Windows.Forms.MaskedTextBox();
this.buttonAddBus = new System.Windows.Forms.Button();
this.comboBoxSelectorMap = new System.Windows.Forms.ComboBox();
this.pictureBox = new System.Windows.Forms.PictureBox();
this.groupBoxSettings.SuspendLayout();
this.groupBox1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.pictureBox)).BeginInit();
this.SuspendLayout();
//
// groupBoxSettings
//
this.groupBoxSettings.Controls.Add(this.groupBox1);
this.groupBoxSettings.Controls.Add(this.buttonRight);
this.groupBoxSettings.Controls.Add(this.buttonDown);
this.groupBoxSettings.Controls.Add(this.buttonLeft);
@ -55,21 +62,79 @@
this.groupBoxSettings.Controls.Add(this.buttonDeleteBus);
this.groupBoxSettings.Controls.Add(this.maskedTextBoxPosition);
this.groupBoxSettings.Controls.Add(this.buttonAddBus);
this.groupBoxSettings.Controls.Add(this.comboBoxSelectorMap);
this.groupBoxSettings.Dock = System.Windows.Forms.DockStyle.Right;
this.groupBoxSettings.Location = new System.Drawing.Point(600, 0);
this.groupBoxSettings.Location = new System.Drawing.Point(645, 0);
this.groupBoxSettings.Name = "groupBoxSettings";
this.groupBoxSettings.Size = new System.Drawing.Size(200, 450);
this.groupBoxSettings.Size = new System.Drawing.Size(200, 643);
this.groupBoxSettings.TabIndex = 0;
this.groupBoxSettings.TabStop = false;
this.groupBoxSettings.Text = "Инструменты";
//
// groupBox1
//
this.groupBox1.Controls.Add(this.listBoxMaps);
this.groupBox1.Controls.Add(this.ButtonDeleteMap);
this.groupBox1.Controls.Add(this.ButtonAddMap);
this.groupBox1.Controls.Add(this.textBoxNewMapName);
this.groupBox1.Controls.Add(this.comboBoxSelectorMap);
this.groupBox1.Location = new System.Drawing.Point(0, 22);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(200, 339);
this.groupBox1.TabIndex = 11;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "Карты";
//
// listBoxMaps
//
this.listBoxMaps.FormattingEnabled = true;
this.listBoxMaps.ItemHeight = 15;
this.listBoxMaps.Location = new System.Drawing.Point(6, 150);
this.listBoxMaps.Name = "listBoxMaps";
this.listBoxMaps.Size = new System.Drawing.Size(188, 124);
this.listBoxMaps.TabIndex = 4;
this.listBoxMaps.SelectedIndexChanged += new System.EventHandler(this.listBoxMaps_SelectedIndexChanged);
//
// ButtonDeleteMap
//
this.ButtonDeleteMap.Location = new System.Drawing.Point(6, 280);
this.ButtonDeleteMap.Name = "ButtonDeleteMap";
this.ButtonDeleteMap.Size = new System.Drawing.Size(194, 53);
this.ButtonDeleteMap.TabIndex = 3;
this.ButtonDeleteMap.Text = "Удалить карту";
this.ButtonDeleteMap.UseVisualStyleBackColor = true;
this.ButtonDeleteMap.Click += new System.EventHandler(this.ButtonDeleteMap_Click);
//
// ButtonAddMap
//
this.ButtonAddMap.Location = new System.Drawing.Point(6, 84);
this.ButtonAddMap.Name = "ButtonAddMap";
this.ButtonAddMap.Size = new System.Drawing.Size(194, 53);
this.ButtonAddMap.TabIndex = 2;
this.ButtonAddMap.Text = "Добавить карту";
this.ButtonAddMap.UseVisualStyleBackColor = true;
this.ButtonAddMap.Click += new System.EventHandler(this.ButtonAddMap_Click);
//
// textBoxNewMapName
//
this.textBoxNewMapName.Location = new System.Drawing.Point(6, 22);
this.textBoxNewMapName.Name = "textBoxNewMapName";
this.textBoxNewMapName.Size = new System.Drawing.Size(188, 23);
this.textBoxNewMapName.TabIndex = 1;
//
// comboBoxSelectorMap
//
this.comboBoxSelectorMap.FormattingEnabled = true;
this.comboBoxSelectorMap.Location = new System.Drawing.Point(6, 55);
this.comboBoxSelectorMap.Name = "comboBoxSelectorMap";
this.comboBoxSelectorMap.Size = new System.Drawing.Size(188, 23);
this.comboBoxSelectorMap.TabIndex = 0;
//
// buttonRight
//
this.buttonRight.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.buttonRight.BackgroundImage = global::DoubleDeckerBus.Properties.Resources.RightArrow;
this.buttonRight.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
this.buttonRight.Location = new System.Drawing.Point(109, 398);
this.buttonRight.Location = new System.Drawing.Point(109, 591);
this.buttonRight.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
this.buttonRight.Name = "buttonRight";
this.buttonRight.Size = new System.Drawing.Size(26, 22);
@ -83,7 +148,7 @@
this.buttonDown.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.buttonDown.BackgroundImage = global::DoubleDeckerBus.Properties.Resources.DownArrow;
this.buttonDown.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
this.buttonDown.Location = new System.Drawing.Point(86, 417);
this.buttonDown.Location = new System.Drawing.Point(86, 610);
this.buttonDown.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
this.buttonDown.Name = "buttonDown";
this.buttonDown.Size = new System.Drawing.Size(26, 22);
@ -97,7 +162,7 @@
this.buttonLeft.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.buttonLeft.BackgroundImage = global::DoubleDeckerBus.Properties.Resources.LeftArrow;
this.buttonLeft.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
this.buttonLeft.Location = new System.Drawing.Point(63, 398);
this.buttonLeft.Location = new System.Drawing.Point(63, 591);
this.buttonLeft.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
this.buttonLeft.Name = "buttonLeft";
this.buttonLeft.Size = new System.Drawing.Size(26, 22);
@ -111,7 +176,7 @@
this.buttonUp.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.buttonUp.BackgroundImage = global::DoubleDeckerBus.Properties.Resources.UpArrow;
this.buttonUp.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
this.buttonUp.Location = new System.Drawing.Point(85, 379);
this.buttonUp.Location = new System.Drawing.Point(85, 572);
this.buttonUp.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
this.buttonUp.Name = "buttonUp";
this.buttonUp.Size = new System.Drawing.Size(26, 22);
@ -122,7 +187,7 @@
//
// button1
//
this.button1.Location = new System.Drawing.Point(6, 320);
this.button1.Location = new System.Drawing.Point(6, 521);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(182, 35);
this.button1.TabIndex = 5;
@ -132,7 +197,7 @@
//
// buttonShowStorage
//
this.buttonShowStorage.Location = new System.Drawing.Point(6, 261);
this.buttonShowStorage.Location = new System.Drawing.Point(6, 480);
this.buttonShowStorage.Name = "buttonShowStorage";
this.buttonShowStorage.Size = new System.Drawing.Size(182, 35);
this.buttonShowStorage.TabIndex = 4;
@ -142,7 +207,7 @@
//
// buttonDeleteBus
//
this.buttonDeleteBus.Location = new System.Drawing.Point(6, 181);
this.buttonDeleteBus.Location = new System.Drawing.Point(6, 438);
this.buttonDeleteBus.Name = "buttonDeleteBus";
this.buttonDeleteBus.Size = new System.Drawing.Size(188, 36);
this.buttonDeleteBus.TabIndex = 3;
@ -152,7 +217,7 @@
//
// maskedTextBoxPosition
//
this.maskedTextBoxPosition.Location = new System.Drawing.Point(6, 152);
this.maskedTextBoxPosition.Location = new System.Drawing.Point(6, 409);
this.maskedTextBoxPosition.Mask = "00";
this.maskedTextBoxPosition.Name = "maskedTextBoxPosition";
this.maskedTextBoxPosition.Size = new System.Drawing.Size(188, 23);
@ -160,7 +225,7 @@
//
// buttonAddBus
//
this.buttonAddBus.Location = new System.Drawing.Point(6, 87);
this.buttonAddBus.Location = new System.Drawing.Point(6, 367);
this.buttonAddBus.Name = "buttonAddBus";
this.buttonAddBus.Size = new System.Drawing.Size(188, 36);
this.buttonAddBus.TabIndex = 1;
@ -168,25 +233,12 @@
this.buttonAddBus.UseVisualStyleBackColor = true;
this.buttonAddBus.Click += new System.EventHandler(this.ButtonAddBus_Click);
//
// comboBoxSelectorMap
//
this.comboBoxSelectorMap.FormattingEnabled = true;
this.comboBoxSelectorMap.Items.AddRange(new object[] {
"Простая карта",
"Водная карта"});
this.comboBoxSelectorMap.Location = new System.Drawing.Point(6, 22);
this.comboBoxSelectorMap.Name = "comboBoxSelectorMap";
this.comboBoxSelectorMap.Size = new System.Drawing.Size(188, 23);
this.comboBoxSelectorMap.TabIndex = 0;
this.comboBoxSelectorMap.Text = "Простая карта";
this.comboBoxSelectorMap.SelectedIndexChanged += new System.EventHandler(this.ComboBoxSelectorMap_SelectedIndexChanged);
//
// pictureBox
//
this.pictureBox.Dock = System.Windows.Forms.DockStyle.Fill;
this.pictureBox.Location = new System.Drawing.Point(0, 0);
this.pictureBox.Name = "pictureBox";
this.pictureBox.Size = new System.Drawing.Size(600, 450);
this.pictureBox.Size = new System.Drawing.Size(645, 643);
this.pictureBox.TabIndex = 1;
this.pictureBox.TabStop = false;
//
@ -194,13 +246,15 @@
//
this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(800, 450);
this.ClientSize = new System.Drawing.Size(845, 643);
this.Controls.Add(this.pictureBox);
this.Controls.Add(this.groupBoxSettings);
this.Name = "FormMapWithSetBuses";
this.Text = "FormMapWithSetBuses";
this.Text = "Карты с набором объектов";
this.groupBoxSettings.ResumeLayout(false);
this.groupBoxSettings.PerformLayout();
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
((System.ComponentModel.ISupportInitialize)(this.pictureBox)).EndInit();
this.ResumeLayout(false);
@ -211,7 +265,6 @@
private GroupBox groupBoxSettings;
private PictureBox pictureBox;
private Button buttonAddBus;
private ComboBox comboBoxSelectorMap;
private Button buttonDeleteBus;
private MaskedTextBox maskedTextBoxPosition;
private Button buttonShowStorage;
@ -220,5 +273,11 @@
private Button buttonDown;
private Button buttonLeft;
private Button buttonUp;
private GroupBox groupBox1;
private TextBox textBoxNewMapName;
private ComboBox comboBoxSelectorMap;
private Button ButtonDeleteMap;
private Button ButtonAddMap;
private ListBox listBoxMaps;
}
}

98
DoubleDeckerBus/DoubleDeckerBus/FormMapWithSetBuses.cs
View File

@ -13,42 +13,47 @@ namespace DoubleDeckerBus
{
public partial class FormMapWithSetBuses : Form
{
private MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap> _mapBusesCollectionGeneric;
private readonly Dictionary<string, AbstractMap> _mapsDict = new Dictionary<string, AbstractMap>() {
{ "Простая карта", new SimpleMap() },
{ "Водная карта", new WaterMap() }
};
private readonly MapsCollection _mapsCollection;
public FormMapWithSetBuses()
{
InitializeComponent();
AbstractMap map = new SimpleMap();
_mapBusesCollectionGeneric = new MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap>(
pictureBox.Width, pictureBox.Height, map);
_mapsCollection = new MapsCollection(pictureBox.Width, pictureBox.Height);
comboBoxSelectorMap.Items.Clear();
foreach (var item in _mapsDict) {
comboBoxSelectorMap.Items.Add(item.Key);
}
}
private void ComboBoxSelectorMap_SelectedIndexChanged(object sender, EventArgs e)
private void ReloadMaps()
{
AbstractMap map = null;
switch (comboBoxSelectorMap.Text)
int index = listBoxMaps.SelectedIndex;
listBoxMaps.Items.Clear();
for (int i = 0; i < _mapsCollection.Keys.Count; i++)
{
case "Простая карта":
map = new SimpleMap();
break;
case "Водная карта":
map = new WaterMap();
break;
listBoxMaps.Items.Add(_mapsCollection.Keys[i]);
}
if (map != null)
if (listBoxMaps.Items.Count > 0 && (index == -1 || index >= listBoxMaps.Items.Count))
{
_mapBusesCollectionGeneric = new MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap>(
pictureBox.Width, pictureBox.Height, map);
listBoxMaps.SelectedIndex = 0;
}
else
else if (listBoxMaps.Items.Count > 0 && index > -1 && index < listBoxMaps.Items.Count)
{
_mapBusesCollectionGeneric = null;
listBoxMaps.SelectedIndex = index;
}
}
private void ButtonAddBus_Click(object sender, EventArgs e)
{
if (_mapBusesCollectionGeneric == null)
if (listBoxMaps.SelectedIndex == -1)
{
return;
}
@ -63,10 +68,10 @@ namespace DoubleDeckerBus
DrawingObjectBus bus = new(form.SelectedBus);
if (_mapBusesCollectionGeneric + bus != -1)
if (_mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty] + bus != -1)
{
MessageBox.Show("Объект добавлен");
pictureBox.Image = _mapBusesCollectionGeneric.ShowSet();
pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowSet();
}
else
{
@ -86,10 +91,10 @@ namespace DoubleDeckerBus
return;
}
int pos = Convert.ToInt32(maskedTextBoxPosition.Text);
if (_mapBusesCollectionGeneric - pos != null)
if (_mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty] - pos != null)
{
MessageBox.Show("Объект удален");
pictureBox.Image = _mapBusesCollectionGeneric.ShowSet();
pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowSet();
}
else
{
@ -99,25 +104,25 @@ namespace DoubleDeckerBus
private void ButtonShowStorage_Click(object sender, EventArgs e)
{
if (_mapBusesCollectionGeneric == null)
if (listBoxMaps.SelectedIndex == -1)
{
return;
}
pictureBox.Image = _mapBusesCollectionGeneric.ShowSet();
pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowSet();
}
private void ButtonShowOnMap_Click(object sender, EventArgs e)
{
if (_mapBusesCollectionGeneric == null)
if (listBoxMaps.SelectedIndex == -1)
{
return;
}
pictureBox.Image = _mapBusesCollectionGeneric.ShowOnMap();
pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowOnMap();
}
private void ButtonMove_Click(object sender, EventArgs e)
{
if (_mapBusesCollectionGeneric == null)
if (listBoxMaps.SelectedIndex == -1)
{
return;
}
@ -139,7 +144,42 @@ namespace DoubleDeckerBus
dir = Direction.Right;
break;
}
pictureBox.Image = _mapBusesCollectionGeneric.MoveObject(dir);
pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].MoveObject(dir);
}
private void ButtonAddMap_Click(object sender, EventArgs e)
{
if (comboBoxSelectorMap.SelectedIndex == -1 || string.IsNullOrEmpty(textBoxNewMapName.Text))
{
MessageBox.Show("Не все данные заполнены", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (!_mapsDict.ContainsKey(comboBoxSelectorMap.Text))
{
MessageBox.Show("Нет такой карты", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
_mapsCollection.AddMap(textBoxNewMapName.Text, _mapsDict[comboBoxSelectorMap.Text]);
ReloadMaps();
}
private void listBoxMaps_SelectedIndexChanged(object sender, EventArgs e)
{
pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowSet();
}
private void ButtonDeleteMap_Click(object sender, EventArgs e)
{
if (listBoxMaps.SelectedIndex == -1)
{
return;
}
if (MessageBox.Show($"Удалить карту {listBoxMaps.SelectedItem}?", "Удаление", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
_mapsCollection.DelMap(listBoxMaps.SelectedItem?.ToString() ?? string.Empty);
ReloadMaps();
}
}
}
}

19
DoubleDeckerBus/DoubleDeckerBus/MapWithSetBusesGeneric.cs
View File

@ -50,13 +50,9 @@ namespace DoubleDeckerBus
public Bitmap ShowOnMap()
{
Shaking();
for (int i = 0; i < _setBuses.Count; i++)
foreach (var bus in _setBuses.GetBuses())
{
var bus = _setBuses.Get(i);
if (bus != null)
{
return _map.CreateMap(_pictureWidth, _pictureHeight, bus);
}
return _map.CreateMap(_pictureWidth, _pictureHeight, bus);
}
return new(_pictureWidth, _pictureHeight);
}
@ -75,11 +71,11 @@ namespace DoubleDeckerBus
int j = _setBuses.Count - 1;
for (int i = 0; i < _setBuses.Count; i++)
{
if (_setBuses.Get(i) == null)
if (_setBuses[i] == null)
{
for (; j > i; j--)
{
var bus = _setBuses.Get(j);
var bus = _setBuses[j];
if (bus != null)
{
_setBuses.Insert(bus, i);
@ -126,12 +122,13 @@ namespace DoubleDeckerBus
int currentWidth = width - 1;
int currentHeight = 0;
for (int i = 0; i < _setBuses.Count; i++) {
foreach (var bus in _setBuses.GetBuses())
{
_setBuses.Get(i)?.SetObject(currentWidth * _placeSizeWidth,
bus?.SetObject(currentWidth * _placeSizeWidth,
currentHeight * _placeSizeHeight,
_pictureWidth, _pictureHeight);
_setBuses.Get(i)?.DrawingObject(g);
bus?.DrawingObject(g);
if (currentWidth > 0)
currentWidth--;

43
DoubleDeckerBus/DoubleDeckerBus/MapsCollection.cs Normal file
View File

@ -0,0 +1,43 @@
using DoubleDeckerBus;
namespace DoubleDeckerBus
{
internal class MapsCollection
{
readonly Dictionary<string, MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap>> _mapStorages;
public List<string> Keys => _mapStorages.Keys.ToList();
private readonly int _pictureWidth;
private readonly int _pictureHeight;
public MapsCollection(int pictureWidth, int pictureHeight)
{
_mapStorages = new Dictionary<string, MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap>>();
_pictureWidth = pictureWidth;
_pictureHeight = pictureHeight;
}
public void AddMap(string name, AbstractMap map)
{
if (Keys.Contains(name)) return;
_mapStorages.Add(name, new MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap>(_pictureWidth, _pictureHeight, map));
}
public void DelMap(string name)
{
_mapStorages.Remove(name);
}
public MapWithSetBusesGeneric<DrawingObjectBus, AbstractMap> this[string ind]
{
get
{
_mapStorages.TryGetValue(ind, out var result);
return result;
}
}
}
}

52
DoubleDeckerBus/DoubleDeckerBus/SetBusesGeneric.cs
View File

@ -9,14 +9,17 @@ namespace DoubleDeckerBus
internal class SetBusesGeneric<T>
where T : class
{
private readonly T[] _places;
private readonly List<T> _places;
public int Count => _places.Length;
public int Count => _places.Count;
private int BusyPlaces = 0;
private readonly int _maxCount;
public SetBusesGeneric(int count)
{
_places = new T[count];
_maxCount = count;
_places = new List<T>();
}
public int Insert(T bus)
@ -26,33 +29,44 @@ namespace DoubleDeckerBus
public int Insert(T bus, int position)
{
if (position < 0 || position >= _places.Length || BusyPlaces == _places.Length) return -1;
if (position < 0 || position >= _maxCount || BusyPlaces == _maxCount) return -1;
BusyPlaces++;
while (_places[position] != null) {
for (int i = _places.Length - 1; i > 0; --i) {
if (_places[i] == null && _places[i - 1] != null) {
_places[i] = _places[i - 1];
_places[i - 1] = null;
}
}
}
_places[position] = bus;
_places.Insert(position, bus);
return position;
}
public T Remove(int position)
{
if (position < 0 || position >= _places.Length) return null;
if (position < 0 || position >= _maxCount) return null;
T savedBus = _places[position];
_places[position] = null;
_places.RemoveAt(position);
return savedBus;
}
public T Get(int position)
{
if (position < 0 || position >= _places.Length) return null;
return _places[position];
public T this[int position] {
get {
if (position < 0 || position >= _maxCount) return null;
return _places[position];
}
set {
Insert(value, position);
}
}
public IEnumerable<T> GetBuses() {
foreach (var bus in _places)
{
if (bus != null)
{
yield return bus;
}
else
{
yield break;
}
}
}
}
}